Safety signal



C. H. GORE.

SAFETY SIGNAL.

APPLICATION FILED JULY 6,1920- Patented Apr. 4, 1922.

they occur cmmnns H. eons, on ST. LOUIS, nssoum;

SAFETY SIGNAL,

Specification of'Letters Patent. latej ted A 4,1922

Application filed July 6,1920. Serial is. 394,070.

To (ZZZ whom it may contain Be it known that 1, (Julianne ll. (iiOltE; a.

citizen of the United States, residing at the city of St. Louis in the State OfllllSSQLlll, have invented certain new and useful Improvements in Safety Signals, of which the I following is a specification.

This invention is a safety-firstsignal to be carried by a trolley car. railroad car, or the like, and adaptedto be operated by the rear door or'other moving part.

Many accidents occur because persons pass usual manner.

by compressed air leading through pipe ,6,

be the same tank from which ,the air brake,

tracting attention thereto and causingpeople to noticetlie warning on the sign and to look out for their safety. If ,desirable. both wlnstleand bell maybe used or either of them. f l

The bell is operated, by: the battery 5 in the The; whistle & t is operated from the reservoir 7, which may or may not oi the car is operated.

behind a stationary car or the like, forgetting I that there may be, anioving car approach ingon thenext track, view of which is obstructed by the stationary car.

S'ince this carelessness occurs 1 when the stationary car has startedinto motion, this signal is so arranged as to operate for a short periodof time after such car has started into motion.

In the accompanying drawings forming, part of this specification, in which like numbers of reference denote like parts wherever Figure 1 is a side elevation of the rear part of a trolley car showing the sign con stitmting part of this invention andtwo forms of noisemaking danger signals Figure 2 shows 1 the device in "operation and is a side elevation of theis'aid two danger signals and theirfioonnection, respectively;

to a battery and to a source of compressed 21,11 and the apparatus for operat ng the said signals;

Figure 3 isa side elevation of part oi" the said operating,apparatus with certain of the parts in positionsfdiiferent from those shown inFigure 2; and" F1gure 1 1s a view s1 milar' to Figures and 3, but showing theldevice inoperative,

i. e., as it is when the car is in motion,

To the rear end of the car 1 is attached I asign 2, bearing anotice of any, desirable phraseology adapted to attract attention tothe thought thatpassagebehind therear end of the car without .careiulness is dangerous This sign 2 will'beso constructed or painted as to be of striking characteristics by day,

r so quickly to attract attention, audit will be illuminated by night for the same purpose. Moreover, an electric bell 3 ,or the like will be borne thereby gor located in juxtaposition thereto, Either said bell 3 or a whistle 4, located on or near thesa-id sign 2, may be used for the purposeot mounted at 19. When thepiston12 is at the end of its stroke, oppositev to the position Figure 2 shows the device in operation. Inv other words when the car is stopped, the door 8 is opened and the'opening of (100128 sets in operation either thebell 3; o'r the whistle 4 or both. A buzzer or any other noisemaking devicelmay be; substituted for the bell -3, or for the bell 3 andfwhistle 4.,

,Thebracket 9 is fastened to thecarwall or roof'l0, and carries the cylinder 11. A piston 12islocated in cylinder 11.,The spring 13, by pressing on plate 14;, forces piston 12 to the position shown? in ,Figure 2.

Thelever15is pivoted at 16L Thus aslidflmwct is providedbetween the lever. 15

and segmental plate 17 :and in that-,way

sliding connection exists between lever 15 and plate 17 Thus when lever 15 vismoved from the position shown in dotted lines in Figure 3 or from the position shown in Figure 4: to the position shown in full lines in Figure 3, the ringing. of the bell 3 occurs.

This bell ringing .is continuous from the time lever 15 touches segmental plated? until, moved out of oontacttherewith. By means of slot 18, lever 15 is slidably and :pivotally shown inFigure ,2, i.-e., as shown in Figure l, there is noco'nta'otnwith segmental plate. 17, and the hell 3 is not ringing, The pisw ton 12- is caused to move towardfan inoperativepositiori by means of sliding plate 20,

mounted by means 01 a shaft 21 in a bearing 22. Plate 20 is pushed forward by, spring 23, As the door8closes, the plate 20 pushesm plate 14: carried by piston rod2 1 and as a result of the push onfpiston rod,24, piston 12 causes compression in cylinder' ll, while spring 23 is compressed, Theddoor 8 may completely close while spring 23, continues to compress and at the same time the compl ession 1n cylinder 11 is relieved bymeuns of,

the adjustable, valve 25, during which time the spring" 23pushes plate 20 and plate 14 together with the piston 12 to the extreme position shown "in Figure 4. Thesize of the segmental plate 17 and its position are so predetermined with relation to the movement of the 1plates 20 and 14 and of piston 12, that the be 1 3 is allowed to ringfor a short period after the door 8 closes with the ob ect of warning people who might rush into dangeron the other track immediately after the car bearing the signal has begun to move i same movements of door 8, lever 15, plates 14 and 20, springs 23 and 13,'piston rod 24;, and pis'ton12 that ringbell 3 or cause the same to cease ringing orito remain inop tive, likewise producethe same effects with respect to whistle 4, bymeans of the connectiiomby slot 26 130 pin 27, on therevolnble V platefQQ, which is mounted on arbor 29, con- "mining a two way cock for the control of passage of "compressed air from tank '7 through pipe 6 to whistle 4.

' "Whether, therefore, both hell 3 and whistle used or only one of them, the operat ingimechanism is'the same with the excep;

tidn of slot 26, pin 27, plate 28, and the cock within or controlled byarbor 29. Bearing 2212:; located in bracket 30, attached to the ,car door or other moving part in such man nor that late 20 is in alinement with or otherwise adapted to actuate plate 14;

Ha ing thus described this invention, 1

i hereby reserve the benefit of all changes in form, arrangement, order, or use of parts, as

it, is evident-that many minor changes may,

be made therein without departing from the sp'rit of {this invention or the scope of the 1 0 owing. claims. T claim:

T1. Ina devioe of the character described,

iii combination with a car and car door, a-

warning a1, means, including means carriedVby sal door and means on a relatively sthtionary part of said car, for operating saidwarning si a1 when the door is opened and for a prcde rmined length of time after saiddoor is closed.

2. a device of the character described, in combination with a car and car door, a warning si a], means, including means carried by sai door and means on a relatively stationary part of said door, for operating said warmn signal while the door is being closedfand or a predetermined length of time after said door is closed.

31 a device of the character described, in? combination with a car and car door, a

warning signal, means, including means carf said {door is closed. 1 a 4.111 a device of thecharacter described,

in combination with a car and a cardoor,

ried by said door and means on a relatively stationary part of said door, for operatin sanifwarning signal when the door is opens dating the time said door remains open and aaa predetermined length of time after a warning signal, means for operating said signal, means for controlling said operating means, for operating the warning signal when the cardoor is o cried and for a pre determined length of time after the door is closed, said control means comprising means upon'a relatively stationary part of the car,

and means on the cardoor adapted to engage the last-mentioned means.

5. In a device of the character described,

scribed, comprising in combination with a car and car door a warning signal a s rin pressed memberio'n the car door, a sl idable member on a relatively stationarypart of said car in alinement with the first mentioned member, means for actuating the slidable member upon the opening of the car door and for operating t e upon the opening of sa ddoor and for a predetermined length ofti ne afterthe'door is.

closed. M t

7. A safety signal of the character dcscribed, comprising in Combination; with a car and car door, a warning signal, a re} ciprocable spring-pressed shaft mounted 03,

the car door, a reciprocable ringpr shaft mounted on a relative y" stationary partof the car in alinemcnt with and t ed to be engaged'nnd reciprocated by he first mentioned'shaft and means connected with the second-mentioned shaft adapted to actuate the warning signal.

S gn n the car p se ia dable member andan S. A safety signal of the character described, comprising a warning signal device, a car door, a. spring pressed shaft slidably mounted on the car door a head on said shaft, 2, cylinder mounts on a relatively stationary part of the car a piston in said cylinder, a spring p ed p ston rodcarried b said piston, a aid on the outer end of sai piston; rod adapted to.,be engaged by the head on the shaft to actuate said piston, upon the closing of said door, and means carried by said piston rod for actuating "the warning signal upon the opening .of'said door.

9. A safety signal of the characterde scribed, c'ornpri'smg a warning signahfluid pressure means for actuating said warning signal, an electrically-operated signal, an electric (tllclllt' through said electricallyoperated 'slgnal, a car door, and means for operating said signal when said (100! is opened and for a predetermined length of time after said door is closed, said means including a member sildably mount d on the car door, a member slidably mounted on a relatively stationary part of the car and adapted to be engaged and actuated by said first mentioned member and a single means connected to said second mentioned memher for controlling said fluid pressure means and said electric circuit, whereby the movement of thecar door actuates both the fluid pressure signal and the electric signal 10. A safety signal of the character described, comprising in combination with a car and a car door, a warning signal, a shaft slidably mounted on the car door, a cylinder mounted on a relatively stationary part of the car, a piston and a spring pressed rod in said cylinder, the outer end of said piston rod being in proximity to and adapted to be actuated by said shaft, connections between the piston rod and the warning signal whereby the Warning signal is actuated by movement of the piston, and an adjustable valve for regulating the compression in the cylinder to control the period of actuation of said warning signal. 11. The combination of a safety sign, a vmrningsignal in connection therewith, a car door, a bracket mounted on the said car door, a shaft borne by the said bracket, a plate and a spring carried by the said shaft, another bracket supported from the car roof, a cylinder supported bythe said bracket, a piston within the said cylinder, a piston rod,

a plate borne by the said rod a spring located between the said plate and the said cylinder, the said cylinder containing an adjustable valve, the said second mentioned plate being adapted to be actuated by, the said first mentioned plate and means connected with the said second mentioned plate adapted to actuatethe said warning signal.

In testimony whereof I hereunto afiix my signature.

, CHARLES H. GORE, 

